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1991 Map of Orrs Springs
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1991 Map of Orrs Springs

USGS Topo · Published 1991

About this map

Orrs Springs serves as a central landmark in this rugged portion of the California Coast Ranges, where the headwaters of several major drainage systems diverge. The landscape is defined by its deep canyons and prominent ridges, such as Pine Ridge and Alaska Ridge, which separate the waters of the South Fork Big River from the South Branch North Fork Navarro River. This 1991 provisional survey captures a network of private holdings and remote outposts, including Greenfield Ranch, Mann Ranch, and Eagle Rock Ranch. The presence of the Montgomery Woods State Reserve in the northwest corner highlights the region's botanical significance, protecting ancient groves amidst the commercial ranching and timber geography. Numerous creeks, such as Ackerman Creek and Daugherty Creek, carve through the terrain, illustrating the intricate hydrology that has shaped Mendocino County’s development and natural history.

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Map Details

Date Portrayed1991
Date Published1991
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:24,000
Physical Dimensions21.9 x 26.7 inches

Editions of this 1991 Orrs Springs Map

This is the sole edition of this map. No revisions or reprints were ever made.

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain